Epiphyte Habitats in an Old Conifer Forest in Western Washington, U.S.A.

McCune, Bruce; Rosentreter, Roger; Ponzetti, Jeanne; Shaw, David C.

doi:10.1639/0007-2745(2000)103[0417:ehiaoc]2.0.co;2

Cited by 119 publications

(74 citation statements)

References 22 publications

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“…The T value for the nonsmoker versus smoker groups indicates that the bacterial communities are similar to each other. The A value, where positive numbers indicate better within-group agreement and negative value less (38), is weakly negative suggesting that the two groups were not distinct enough to be separated.…”

Section: Trflpmentioning

confidence: 99%

The Lung Tissue Microbiome in Chronic Obstructive Pulmonary Disease

Sze

Dimitriu²,

Hayashi³

et al. 2012

Am J Respir Crit Care Med

469

422

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Section: Trflpmentioning

confidence: 99%

The Lung Tissue Microbiome in Chronic Obstructive Pulmonary Disease

Sze

Dimitriu²,

Hayashi³

et al. 2012

Am J Respir Crit Care Med

469

422

View full text Add to dashboard Cite

“…Tree age, the height of the sampling spot and factors related to canopy openness, such as irradiance, humidity, temperature and wind velocity, were identified as important mesoscale factors, differentiating cryptogamic corticolous communities among trees of a single forest stand (BarkmaN 1958;mccuNe et al 2000;caruso & Thor 2007;ramBo 2010). Bark structure and (especially) the bark surface pH levels have also repeatedly been recognised as crucial factors shaping corticolous communities of mosses and lichens (BarkmaN 1958;GoNzaLez-maNceBo et al 2003).…”

Section: Introductionmentioning

confidence: 99%

Community structure of corticolous microalgae within a single forest stand: evaluating the effects of bark surface pH and tree species

Štifterová¹,

Neustupa²

2015

Fottea

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Community structure of corticolous macro-epiphytes, such as lichens and mosses, usually strongly correlates with bark characteristics related to the taxonomic identity of the host tree. However, the reasons for the occurrence of similar patterns of microalgal corticolous biofilms are unclear and have rarely been investigated. In this study, we surveyed aerial phototrophic biofilms growing on the bark of Acer, Alnus, Fagus, Fraxinus and Picea trees in a single stand of a temperate forest. A flathead electrode was used to measure and evaluate the effect of bark surface pH on microalgal species richness and composition. In total, 47 distinct morphotypes were found, chiefly consisting of various coccoid green algae belonging to Trebouxiophyceae and Chlorophyceae. In addition, members of the Bacillariophyceae, Eustigmatophyceae, Streptophyta, Trentepohliales, Xanthophyceae and Cyanobacteria were also found. Bark pH and species richness of the samples were positively correlated; in the most acidic samples (from Picea and Alnus trees), only green algae occured. Aerial diatoms, Cyanobacteria, Xanthophyceae and Trentepohlia sp. were only found in the more basic samples. The species composition was significantly structured by the separated effects of host tree species, the bark pH and the sampling season. The observed non-random differences in community structure of the biofilms among host tree species indicated possible effects of deterministic processes, such as species sorting of microalgae along the environmental gradients.

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“…Distancebased permutational multi-variate analysis of variance (PERMANOVA - Anderson, 2001) was employed in a twoway factorial design to test for differences among years and between seasons. Bray-Curtis dissimilarities were used for this test due to the frequency of zeros in the data set (McCune et al, 2000). Differences among years were considered significant at a P-level<0.016 (Bonferroni's correction: α = 0.05/3 comparisons).…”

Section: Data Analysesmentioning

confidence: 99%

Spatial patterns of zooplanktivore Chirostoma species (Atherinopsidae) during water-level fluctuation in the shallow tropical Lake Chapala, Mexico: seasonal and interannual analysis

2011

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This study addresses the influence of water-level fluctuations on fish distribution at two temporal scales: seasonal (dry and rainy) and interannual (low and high volume conditions). The analysis of abundance relationships among three zooplanktivore Chirostoma species at fifteen sites in Lake Chapala, Mexico, revealed the significant influence of contrasting conditions (P=0.0002). Seasonally, segregation was more related to species dominance in the dry season and exclusively related to environmental characteristics in the rainy season. Interanually, biotic influence occurred in the shallowest and the deepest episodes of the lake. Environmental characteristics influenced species distribution when the lake reached 25% of its volume. Site, depth, temperature, and salinity were the leading factors influencing fish distribution. These results emphasize the necessity to implement different management strategies according to lake volume, particularly when a critical threshold is reached.El presente estudio describe la influencia que tiene la fluctuación del nivel del agua en la distribución de los peces a dos diferentes escalas: estacional (estiaje y lluvias) e interanual (condiciones de bajo y alto volumen). El análisis de las relaciones de abundancia entre tres especies zooplanctófagas de Chirostoma en quince sitios del Lago de Chapala, México, reveló una influencia estadísticamente significativa en las condiciones contrastantes (P=0.0002). Estacionalmente, la segregación estuvo más relacionada a la dominancia de las especies en la época de estiaje y exclusivamente relacionada a las características ambientales en la época de lluvias. Interanualmente, la influencia biótica se presenta en los episodios más someros y más profundos del lago. Las características ambientales influenciaron la distribución de las especies cuando el lago alcanzó el 25% de su volumen. El sitio geográfico, profundidad, temperatura y salinidad fueron los principales factores que influenciaron la distribución de los peces. Estos resultados enfatizan la necesidad de implementar diferentes estrategias de manejo de acuerdo al volumen del lago, particularmente cuando se alcanza un umbral crítico.

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Epiphyte Habitats in an Old Conifer Forest in Western Washington, U.S.A.

Cited by 119 publications

References 22 publications

The Lung Tissue Microbiome in Chronic Obstructive Pulmonary Disease

The Lung Tissue Microbiome in Chronic Obstructive Pulmonary Disease

Community structure of corticolous microalgae within a single forest stand: evaluating the effects of bark surface pH and tree species

Spatial patterns of zooplanktivore Chirostoma species (Atherinopsidae) during water-level fluctuation in the shallow tropical Lake Chapala, Mexico: seasonal and interannual analysis

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